CN217152863U

CN217152863U - Reciprocating gas compressor and sliding block thereof

Info

Publication number: CN217152863U
Application number: CN202221024677.5U
Authority: CN
Inventors: 卜高选; 程俊
Original assignee: Nanjing Ekpu Power Technology Co ltd
Current assignee: Nanjing Ekpu Power Technology Co ltd
Priority date: 2022-04-30
Filing date: 2022-04-30
Publication date: 2022-08-09
Anticipated expiration: 2032-04-30

Abstract

The utility model discloses a reciprocating gas compressor and slider thereof, reciprocating gas compressor includes the casing, eccentric main shaft, the inside casing, frame and slider, the slider passes through the bearing to be fixed in eccentric main shaft's periphery, the inside casing is arranged in the frame, the frame all is equipped with the rectangular hole with the center of inside casing, the slider is at the downthehole motion of rectangular hole under eccentric main shaft's drive, the slider includes slider body, there is the interval between slider body global and the inner wall of rectangular hole, slider body and the parallel four arriss department of eccentric main shaft all set up jaggedly, install the connecting axle parallel with eccentric main shaft in the breach, be equipped with the gyro wheel with the contact of rectangular hole inner wall on the connecting axle, gyro wheel protrusion in slider body's periphery, the gyro wheel is with the inner wall roll fit of rectangular hole. The friction between the roller and the inner frame and the outer frame is rolling friction, so that the friction force of moving parts of the compressor is reduced, and the peripheral surface of the sliding block is not in contact with the inner wall surfaces of the rectangular holes of the inner frame and the outer frame, so that the heat caused by the friction is reduced.

Description

Reciprocating gas compressor and sliding block thereof

Technical Field

The utility model relates to a reciprocating type gas compressor and slider thereof belongs to gas compressor technical field.

Background

The reciprocating gas compressor is a commonly used compressor, and Chinese patent with patent number CN202020928245.1 discloses a reciprocating compressor, which comprises a motor, an eccentric main shaft, an inner frame, an outer frame and a slide block, wherein one end of the eccentric main shaft extends out of the shell and is connected with the output end of the motor, the slide block is fixed on the periphery of the eccentric main shaft through a bearing, two end surfaces in the width direction of the outer frame are respectively provided with an outer frame boss, and each outer frame boss is provided with a piston; the inner frame is arranged in the outer frame, two end faces of the inner frame in the width direction are respectively provided with an inner frame boss, each inner frame boss is provided with a piston, and the axis of each inner frame boss is perpendicular to the axis of each outer frame boss; the slider runs through inside casing and frame, and the center of frame and inside casing is provided with the same rectangular hole, and the slider is at the downthehole motion of rectangular under the drive of eccentric main shaft for inside casing and frame make reciprocating linear motion in two mutually perpendicular's directions, thereby drive piston reciprocating motion, accomplish gas compression.

In the use process of the compressor in the prior art, when the inner frame and the outer frame are driven by the sliding block to do reciprocating motion, the sliding block slides with the inner wall of the rectangular hole of the inner frame and the inner wall of the rectangular hole of the outer frame, and the sliding block generates a large amount of friction heat in the sliding motion process, so that the temperature of the contact part of the sliding block and the inner frame and the temperature of the contact part of the sliding block and the outer frame are increased, the temperature of a system is increased, the load is increased, and the efficiency is reduced; and such compressors require continuous oil lubrication of the moving parts.

Disclosure of Invention

An object of the utility model is to provide an oil-free lubrication's reciprocating gas compressor for solve the big temperature height of frictional force between prior art's reciprocating gas compressor slider and the interior frame, need the lubricated technical problem of lubricating oil. And simultaneously, the utility model discloses still provide a reciprocating type gas compressor's slider.

The utility model adopts the following technical scheme: a reciprocating gas compressor comprises a shell, an eccentric main shaft, an inner frame, an outer frame and a sliding block, wherein the sliding block is fixed on the periphery of the eccentric main shaft through a bearing; the inner frame is arranged in the outer frame, two end faces of the inner frame in the width direction are respectively provided with an inner frame boss, each inner frame boss is provided with a piston, and the axis of each inner frame boss is perpendicular to the axis of each outer frame boss; the slider comprises a slider body, a gap is arranged between the peripheral surface of the slider body and the inner wall of the rectangular hole, notches are formed in four edges of the slider body parallel to the eccentric main shaft, a connecting shaft parallel to the eccentric main shaft is installed in each notch, a roller in contact with the inner wall of the rectangular hole is arranged on each connecting shaft, the roller protrudes out of the periphery of the slider body, and the roller is matched with the inner wall of the rectangular hole in a rolling mode.

The upper and lower both ends of breach are equipped with slider body fixed connection's last engaging lug and engaging lug down respectively, connecting axle both ends are fixed connection respectively on last engaging lug and lower engaging lug, and the gyro wheel rotates and installs on the connecting axle, and gyro wheel and rectangular hole inner wall roll complex global protrusion in the outer fringe of last engaging lug and lower engaging lug go up the engaging lug and all have the interval with between the inner wall of rectangular hole with the outer fringe of engaging lug down, go up the engaging lug and be parallel with slider body's top surface and bottom surface respectively with the engaging lug down, go up the engaging lug with the engaging lug down respectively with slider body's top surface and bottom surface body coupling.

Lie in the breach and be equipped with well engaging lug between engaging lug and the lower engaging lug, gyro wheel and rectangular hole inner wall roll complex global protrusion in the outer fringe of well engaging lug, have the interval between the outer fringe of well engaging lug and the inner wall of rectangular hole, the connecting axle runs through well engaging lug, goes up the engaging lug and all is equipped with the gyro wheel between well engaging lug, well engaging lug and the lower engaging lug.

The middle connecting lugs are connected with the sliding blocks integrally, more than two middle connecting lugs are arranged, the middle connecting lugs are arranged in parallel at intervals, and rolling wheels are arranged between every two adjacent middle connecting lugs respectively.

The roller adopts a self-lubricating rolling bearing.

The utility model discloses a reciprocating type gas compressor's slider adopts following technical scheme: the utility model provides a reciprocating type gas compressor's slider, includes the slider body, the global setting that is used for with compressor moving part wall interval of slider body, four arriss departments that the slider body is parallel with the compressor main shaft all set up jaggedly, install the connecting axle parallel with the compressor main shaft in the breach, be equipped with on the connecting axle with the gyro wheel of rectangular hole inner wall contact, gyro wheel protrusion in the periphery of slider body, gyro wheel and compressor moving part wall roll cooperation.

The upper and lower both ends of breach are equipped with slider body fixed connection's last engaging lug and lower engaging lug respectively, the both ends difference fixed connection of connecting axle is on last engaging lug and lower engaging lug, and the gyro wheel rotates to be installed on the connecting axle, and gyro wheel and compressor moving part roll complex global protrusion in the outer fringe of last engaging lug and lower engaging lug go up the engaging lug and all have the interval with between the compressor moving part with the outer fringe of engaging lug down, go up the engaging lug and be parallel with slider body's top surface and bottom surface respectively with lower engaging lug, go up the engaging lug with lower engaging lug respectively with slider body's top surface and bottom surface body coupling.

The gap is internally provided with a middle connecting lug between the upper connecting lug and the lower connecting lug, the rolling wheel and the compressor moving part are in rolling fit with the peripheral surface protruding out of the outer edge of the middle connecting lug, an interval is arranged between the outer edge of the middle connecting lug and the compressor moving part, the connecting shaft penetrates through the middle connecting lug, and the upper connecting lug and the middle connecting lug, the middle connecting lug and the lower connecting lug are all provided with the rolling wheel.

Well engaging lug and slider body coupling, well engaging lug has more than two, and the parallel interval of each engaging lug sets up, is equipped with the gyro wheel between the two adjacent engaging lugs respectively.

The roller adopts a self-lubricating rolling bearing.

The utility model has the advantages that: the utility model discloses it is rotatory to drive eccentric main shaft by the motor during the use, the epaxial slider of eccentric main is owing to receive the restriction of inside casing and frame, make circumference translation around eccentric main shaft under eccentric main shaft's drive, and drive inside casing and frame be reciprocating motion in two directions of mutually perpendicular, because four arriss departments at the slider set up the gyro wheel, the gyro wheel passes through the connecting axle and installs on the slider body, when the slider drives inside casing and frame reciprocating motion, gyro wheel and inside casing and frame contact, the friction between gyro wheel and inside casing and the frame is rolling friction, the frictional force of moving part has been reduced, and the slider global not with the rectangular hole internal face contact of inside casing and frame, consequently, the heat that the friction brought has significantly reduced, thereby just need not add lubricating oil between slider and inside and outside frame.

Preferably, the upper connecting lug and the lower connecting lug are integrally connected to the slider body, so that the slider body is easy to process while the connecting shaft is assembled.

Preferably, the upper engaging lug and the lower engaging lug are separated by the middle engaging lug, so that a plurality of spaced rollers are adopted at one edge of the sliding block, and the contact area between the rollers and the inner frame and the outer frame is smaller.

Preferably, adopt the gyro wheel to adopt self-lubricating antifriction bearing, can further simplify the oil supply design.

Drawings

Figure 1 is a cross-sectional view of a reciprocating gas compressor according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the slider structure of FIG. 1;

fig. 4 is an exploded view of fig. 3.

In the figure: 1-shell, 2-eccentric main shaft, 3-inner frame, 4-outer frame, 5-slide block, 51-slide block body, 52-connecting shaft, 53-roller, 54-upper connecting lug, 55-lower connecting lug and 56-middle connecting lug.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The reciprocating gas compressor of the embodiment of the present invention has a structure as shown in fig. 1 to 2, wherein a cylinder, a valve and a pipeline are omitted in the drawing, and only a core structure of the compressor is shown in the drawing, the reciprocating gas compressor of the embodiment includes a shell 1, an eccentric spindle 2, an inner frame 3, an outer frame 4 and a slider 5, two end surfaces in the width direction of the outer frame are respectively provided with an outer frame boss, and each outer frame boss is provided with a piston; the inner frame is arranged in the outer frame, two end faces of the inner frame in the width direction are respectively provided with an inner frame boss, each inner frame boss is provided with a piston, and the axis of each inner frame boss is perpendicular to the axis of each outer frame boss; the slider 5 is fixed on the periphery of the eccentric main shaft 2 through a bearing, the inner frame 3 is arranged in the outer frame 4, rectangular holes are formed in the centers of the outer frame 4 and the inner frame 3, the slider 5 moves in the rectangular holes under the driving of the eccentric main shaft 2, the structure of the slider 5 is shown in figures 3 to 4, the slider 5 comprises a slider body 51, intervals are formed between the peripheral surface of the slider body 51 and the inner wall of the rectangular holes, four parallel edges of the slider body 51 and the eccentric main shaft 2 are provided with notches, a connecting shaft 52 parallel to the eccentric main shaft 2 is installed in the notches, a roller 53 in contact with the inner wall of the rectangular hole is arranged on the connecting shaft 52, the roller 53 protrudes out of the periphery of the slider body 51, and the roller 53 is in rolling fit with the inner wall of the rectangular holes.

The upper end and the lower end of the notch are respectively provided with an upper connecting lug 54 and a lower connecting lug 55 which are fixedly connected with the slider body 51, the upper connecting lug 54 and the lower connecting lug 55 are respectively parallel to the top surface and the bottom surface of the slider body 51, the upper connecting lug 54 and the lower connecting lug 55 are respectively and integrally connected with the top surface and the bottom surface of the slider body 51, the two ends of the connecting shaft 52 are respectively and fixedly connected with the upper connecting lug 54 and the lower connecting lug 55, the roller 53 is rotatably installed on the connecting shaft 52, the circumferential surface of the roller 53 and the inner wall of the rectangular hole in rolling fit protrudes out of the outer edges of the upper connecting lug 54 and the lower connecting lug 55, and an interval is reserved between the outer edges of the upper connecting lug 54 and the lower connecting lug 55 and the inner wall of the rectangular hole. In the embodiment, two middle connecting lugs 56 which are arranged in parallel at intervals are arranged between the upper connecting lug 54 and the lower connecting lug 55 in the gap, the middle connecting lugs 56 are integrally connected with the slider body 51, the peripheral surface of the roller 53 in rolling fit with the inner wall of the rectangular hole protrudes out of the outer edge of the middle connecting lug 56, the outer edge of the middle connecting lug 56 is spaced from the inner wall of the rectangular hole, the connecting shaft 52 penetrates through the two middle connecting lugs 56, and the roller 53 is arranged between the upper connecting lug 54 and the middle connecting lug 56, between the two middle connecting lugs 56, between the middle connecting lug 56 and the lower connecting lug 55.

The compressor of this embodiment drives eccentric main shaft by the motor rotatory when using, the epaxial slider of eccentric main is owing to receive the restriction of inside casing and frame, make circumference translation around eccentric main shaft under the drive of eccentric main shaft, and drive inside casing and frame be reciprocating motion in two directions of mutually perpendicular, because four arriss departments at the slider set up the gyro wheel, the gyro wheel passes through the connecting axle and installs on the slider body, when the slider drives inside casing and frame reciprocating motion, the gyro wheel contacts with inside casing and frame, the friction between gyro wheel and inside casing and the frame is rolling friction, the frictional force of moving part has been reduced, and the slider global is not contacted with the rectangular hole internal face of inside casing and frame, consequently, the heat that the friction brought has significantly reduced. The gyro wheel of this embodiment adopts self-lubricating antifriction bearing, further simplifies the oil supply design.

The utility model relates to a reciprocating gas compressor's slider of embodiment, including slider body 51, slider body 51 global be used for with compressor moving part wall interval setting, slider body 51 all sets up jaggedly with four arris departments that the compressor main shaft is parallel, installs connecting axle 52 parallel with the compressor main shaft in the breach, be equipped with on the connecting axle 52 with the gyro wheel 53 of rectangular hole inner wall contact, gyro wheel 53 protrusion in slider body 51's periphery, gyro wheel 53 and compressor moving part wall roll fit.

The upper end and the lower end of the notch are respectively provided with an upper connecting lug 54 and a lower connecting lug 55 which are fixedly connected with the slider body 51, the upper connecting lug 54 and the lower connecting lug 55 are respectively parallel to the top surface and the bottom surface of the slider body 51, the upper connecting lug 54 and the lower connecting lug 55 are respectively and integrally connected with the top surface and the bottom surface of the slider body 51, the two ends of the connecting shaft 52 are respectively and fixedly connected with the upper connecting lug 54 and the lower connecting lug 55, the roller 53 is rotatably installed on the connecting shaft 52, the circumferential surface of the roller 53 in rolling fit with the inner wall of the rectangular hole protrudes out of the outer edges of the upper connecting lug 54 and the lower connecting lug 55, and an interval is reserved between the outer edges of the upper connecting lug 54 and the lower connecting lug 55 and the wall surface of the compressor moving part. In the embodiment, two middle connecting lugs 56 which are arranged in parallel at intervals are arranged between the upper connecting lug 54 and the lower connecting lug 55 in the gap, the middle connecting lugs 56 are integrally connected with the slider body 51, the peripheral surface of the roller 53 in rolling fit with the inner wall of the rectangular hole protrudes out of the outer edge of the middle connecting lug 56, the outer edge of the middle connecting lug 56 is spaced from the inner wall of the rectangular hole, the connecting shaft 52 penetrates through the two middle connecting lugs 56, and the roller 53 is arranged between the upper connecting lug 54 and the middle connecting lug 56, between the two middle connecting lugs 56, between the middle connecting lug 56 and the lower connecting lug 55. The roller adopts a self-lubricating rolling bearing.

The sliding block is applied to the reciprocating gas compressor, the wall surface of the sliding block is not in direct contact with the wall surface of the moving part, the friction between the roller and the moving part is rolling friction, the friction force of the moving part is reduced, heat caused by friction is greatly reduced, and lubricating oil does not need to be added between the sliding block and the moving part.

The above-mentioned embodiment does the utility model discloses preferred embodiment, well engaging lug can adopt one or more arbitrary quantity, and when well engaging lug had more than two, the parallel interval of engaging lug set up in each, is equipped with the gyro wheel between the adjacent two engaging lugs respectively. Of course, the middle engaging lug is not necessary, and the roller can be of a long cylindrical structure when the middle engaging lug is not arranged between the upper engaging lug and the lower engaging lug.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed.

Claims

1. A reciprocating gas compressor comprises a shell, an eccentric main shaft, an inner frame, an outer frame and a sliding block, wherein the sliding block is fixed on the periphery of the eccentric main shaft through a bearing; the inner frame is arranged in the outer frame, two end faces of the inner frame in the width direction are respectively provided with an inner frame boss, each inner frame boss is provided with a piston, and the axis of each inner frame boss is perpendicular to the axis of each outer frame boss; the method is characterized in that: the slider comprises a slider body, a gap is arranged between the peripheral surface of the slider body and the inner wall of the rectangular hole, notches are formed in four edges of the slider body parallel to the eccentric main shaft, a connecting shaft parallel to the eccentric main shaft is installed in each notch, a roller in contact with the inner wall of the rectangular hole is arranged on each connecting shaft, the roller protrudes out of the periphery of the slider body, and the roller is matched with the inner wall of the rectangular hole in a rolling mode.

2. The reciprocating gas compressor of claim 1, wherein: the upper and lower both ends of breach are equipped with slider body fixed connection's last engaging lug and engaging lug down respectively, connecting axle both ends are fixed connection respectively on last engaging lug and lower engaging lug, and the gyro wheel rotates and installs on the connecting axle, and gyro wheel and rectangular hole inner wall roll complex global protrusion in the outer fringe of last engaging lug and lower engaging lug go up the engaging lug and all have the interval with between the inner wall of rectangular hole with the outer fringe of engaging lug down, go up the engaging lug and be parallel with slider body's top surface and bottom surface respectively with the engaging lug down, go up the engaging lug with the engaging lug down respectively with slider body's top surface and bottom surface body coupling.

3. The reciprocating gas compressor of claim 2, wherein: lie in the breach and be equipped with well engaging lug between engaging lug and the lower engaging lug, gyro wheel and rectangular hole inner wall roll complex global protrusion in the outer fringe of well engaging lug, have the interval between the outer fringe of well engaging lug and the inner wall of rectangular hole, the connecting axle runs through well engaging lug, goes up the engaging lug and all is equipped with the gyro wheel between well engaging lug, well engaging lug and the lower engaging lug.

4. The reciprocating gas compressor of claim 3, wherein: the middle connecting lugs are connected with the sliding blocks integrally, more than two middle connecting lugs are arranged, the middle connecting lugs are arranged in parallel at intervals, and rolling wheels are arranged between every two adjacent middle connecting lugs respectively.

5. The reciprocating gas compressor of any one of claims 1 to 4, wherein: the roller adopts a self-lubricating rolling bearing.

6. A slider for a reciprocating gas compressor, characterized in that: the sliding block comprises a sliding block body, wherein the peripheral surface of the sliding block body is used for being arranged at intervals with the wall surface of a compressor moving part, four parallel edges of the sliding block body and a compressor main shaft are provided with notches, a connecting shaft parallel to the compressor main shaft is installed in the notches, a roller contacted with the inner wall of a rectangular hole is arranged on the connecting shaft, the roller protrudes out of the periphery of the sliding block body, and is matched with the wall surface of the compressor moving part in a rolling manner.

7. The slider of a reciprocating gas compressor of claim 6, wherein: the upper and lower both ends of breach are equipped with slider body fixed connection's last engaging lug and lower engaging lug respectively, the both ends difference fixed connection of connecting axle is on last engaging lug and lower engaging lug, and the gyro wheel rotates to be installed on the connecting axle, and gyro wheel and compressor moving part roll complex global protrusion in the outer fringe of last engaging lug and lower engaging lug go up the engaging lug and all have the interval with between the compressor moving part with the outer fringe of engaging lug down, go up the engaging lug and be parallel with slider body's top surface and bottom surface respectively with lower engaging lug, go up the engaging lug with lower engaging lug respectively with slider body's top surface and bottom surface body coupling.

8. The slider of a reciprocating gas compressor of claim 7, wherein: the gap is internally provided with a middle connecting lug between the upper connecting lug and the lower connecting lug, the rolling wheel and the compressor moving part are in rolling fit with the peripheral surface protruding out of the outer edge of the middle connecting lug, an interval is arranged between the outer edge of the middle connecting lug and the compressor moving part, the connecting shaft penetrates through the middle connecting lug, and the upper connecting lug and the middle connecting lug, the middle connecting lug and the lower connecting lug are all provided with the rolling wheel.

9. The slider of a reciprocating gas compressor of claim 8, wherein: well engaging lug and slider body coupling, well engaging lug has more than two, and the parallel interval of each engaging lug sets up, is equipped with the gyro wheel between the two adjacent engaging lugs respectively.

10. The slider of a reciprocating gas compressor according to any one of claims 6 to 9, wherein: the roller adopts a self-lubricating rolling bearing.